Water-motor.



No. 770,324. PATENTED SEPT. 20, 1904, J. P. SHBVLIN.

WATER MOTOR.

APPLICATION FILED JAN.18. 1904.

NO MODEL. 2 SHEETS-SHEET 1.

1ML-770,324. PATENTED SEPT'. 20, 190.4. J. P. sHBVL-IN.

WATER MOTOR.

APPLIOATION FILED JAN. 18. 1904:.

N0 MODEL. 2 SHEETS-'SHEET 2.

001,/ NMi 1 olvlhwoau UNITED STATES Patented september 2o, 1904.

PATENT OFFICE.

WATER-MOTOR.

SPECIFICATION forming part of Letters Patent No. 770,324, datedSeptember 20, 1904.-. Application filed January 18,1904. Serial No.189.599. (No model.)

T0 IJ/Z whom, it may concern,.-

Be it known that I, JOSEPH P. SHEVLIN, a citizen of the United States ofAmerica, residingin the city and county of Denver and State of Colorado,have invented certain new and useful Improvements in VVater-Motors; andI do declare the following to be a full, clear, and exact description ofthe invention, such as will enable others skilled in the art to which itappertains to make and use the same, reference being had to theaccompanying drawings, and to the figures of reference marked thereon,which form a part of this specification.

This invention relates to improvements in water-motors.

The object of the invention is to provide a motor having areciprocating-piston which connects with an operating-lever,the saidlever also being connected with mechanism which controls the movement ofa valve which regulates the flow of water to the piston-chamber.

The invention further consists in an improved manner of operating thewater-regulating or cut-off valve, so that the same shall beinstantaneously shifted to admit water under pressure through one portand permit the escape of exhaust-water through another portsimultaneously as the operating piston reaches the limit of its movementat each stroke, thus permitting the full pressure of the water to beexerted upon the piston throughout its entire forward and backwardmovement.

I accomplish these ends by the mechanism illustrated in the accompanyingdrawings, in which- Figure 1 is a side elevation of my improved motor.Fig. 2 is a plan view thereof. Fig. 8 is a longitudinal verticalsectional view of the same, showing the operating-piston at the limit ofits movement in one direction, the cut-0H' Valve having just beenshifted to admit the water behind the piston and to allow it to exhaustin front of the piston. Fig. 1 is a similar view showing theoperating-piston almost at the limit of' its opposite movement, thevalve-operating mechanism being in the position it assumes just prior toshifting the said valve. Fig. 5 is a transverse vertical sectional Viewthrough the motor, taken on the line 5 5 of Fig. 1; and Fig. 6 isasimilar view on the line 6 6 of Fig. 1.

Referring to the accompanying drawings, the numeral 1 indicates thepiston-chamber, and 2 the valve-chamber, of my improved water-motor. Thetwo chambers form an integral structure and are arranged one above theother, the piston-chamber being uppermost. These' chambers are supportedupon standards 8, preferably integral therewith, though they may beseparate castings, if' desired. A piston 4L has a reciprocating movementin the chamber 1 and is secured upon one end of' a piston-rod 5, whichextends through a suitable packing-box 6 in the rear cylinderhead .7,the opposite end of the cylinder being' closed bya head 8. The other endof' the piston-rod is suitably secured to a cross-head 9, which travelsupon a pair of guides 10, secured at one end to the cylinder-head 7 andat the other end to across-piece 11, supported upon a standard 12. Uponeach end of the cross-head 9 is pivotally secured a connecting-arm 13,the other end of each of said arms being pivotally connected to theoperating-lever 14 of' the motor, as will be more fully hereinafterdescribed. Ports 15 and 16 extend through the wall separating the twochambers, the port 15 connecting the chambers near their forward ends,while the port 16 connects the chambers near their rear ends, theextreme movement of the piston in each direction being between these twoports. The valve-chamber 2 is cast with a short bore near each end ofslightly less diameter than the remaining portion of the chamber, and inthese bores 17 and 18, respectively, the heads of the water-regulatingvalve 19V move. The valve 19 has a short throw, as will presentlyappear, and only that portion of the chamber traveled by the heads ofthe valve requires a smooth finish. For this reason the bores 17 and 18are formed and finished, while the remaining portion of the cylinder isleft rough or unfinished. The ports 15 and 16, respectively, connect thetwo chambers at points centrally of the lengths of the bores 17 and 18,and the valve moves just far enough in each directionto bring its headsfirst on one side of the ports and then on the other.

rIhe valve 19 comprises a hollow stem 20, of suitable length, at eachend of which is formed a head, the said heads 21 and 22 each IOO beingprovided with an annular groove in which a suitable packing is housed.The stem 2O is rigidly secured upon a rod 23, which is preferablyrectangular in cross-section and. which extends through the heads 24 and25 of the valve-chamber and a suitable distance beyond them. The heads24 and 25 are each formed with an inwardly-extended cylindrical housing26, the inner ends of which are closed save for an opening through whichthe rod 23 passes, and upon each end of the rod is slipped apacking-disk 27, having a short stem portion which prevents the diskfrom wabbling. A suitablepacking is placed between the disks 27 and theclosed ends of the housings, and coiled springs 28 vand 29,respectively, are passed over the ends of the rods and against thepacking-disk, the portions of the said springs which extend outside thehousings being inclosed by thimbles 30, which are also slipped upon theends of the rod and extend slightly within the housings of the heads 24and 25. The thimbles are prevented from moving' outwardly upon the rodsbeyond the position shown in Fig. 3 by pins 31, which pass through therods and against the thimbles or by any other suitable means.

The standards 3, which support the cylinders, are each divided centrallyto form guideways 32, in which an adjustable reciprocating bar 33 moves.This bar comprises three members 34, 35, and 36, the central member 35being `practically in the form of an ordinary turnbuckle, its ends beingprovided with threaded holes, the hole in one end having a left-handthread, while the hole in the opposite end has a right-hand thread. Themembers 34 and 36 are alike in construction, each comprising a bar whichis bent to form members which are at right angles to each other. One endor' each of these angled members is threaded to engage one of thethreaded ends of the member 35, and when the three members are unitedthey form an adjustable bar having upturned ends, each of the said endsbeing provided with a slot 37, in one of which is pivoted a dog 38,while the slot in the other end carries a similar pivoted dog 39. Eacho1' the dogs comprises a horizontal portion through which the pivot-pin40 passes, the outer end of said horizontal portion being bent up atright angles, while the inner end is bent down at right angles. Theupturned ends or' i the dogs are designed at a predetermined time toengage notches 1n the under side of the rod 23, the ends of which passthrough the slots 37, theV said notches 41 and 42 being formed near theends or' the said rod above the dogs 38 and 39, respectively, While thedownturned ends of the-dogs are positioned to engage inclined faces 43and 44, lwhich are formed upon horizontal arms 45 and 46, the arm45passing through the slot 37 in the member 34 of the reciprocating barand being' suitably secured to the adjacent standard 3, while the arm 46is secured to the other standard and passes through the slot inthemember 36 of the reciprocating bar. The dogs 38 and 39 are caused toengage the notches 41 and 42 by springs 38A and 39A, respectively, whichexert an upward pressure upon the said dogs and force them into the saidnotches. A slot 35A, of suitable length and width, is formed in themember 35 of the reciprocating bar, and centrally of this slot is a pinupon which a roller 47 is mounted. The members 34 and 36 or' the barrest upon rollers 48 and 49, which are mounted on pins which passthrough ears 50, formed upon the standards 3. The reciprocating bar,with its dogs 38 and 39, effects the movement of the water-regulatingvalve 19 to admit the water to the piston-chamberl alternately behindand in front of the operating-piston, and the movement of the said baris accomplished in the following manner: Upon the under side or' thevalve-chamber 2 and centrally or' its length is formed a pair ofdepending ears 51, which support a pin 52, the ends of which extend ashort distance beyond the said ears, and upon each of these extendedends is pivoted one of the members of the yoked portion of theoperatinglever 14, previously mentioned. The yoke portion of the leverstraddles the cylinders, and its upper end is pivotally secured to oneend of a p itman or connecting-rod, by which the power generated by themotor is transmitted to the machine or mechanism to be operated. Thelower ends of the yoke extend a short distance below the pivot-pin 52IOC and are connected by a rod 53, which lies just above the middlemember 35 of the reciprocating bar 33. This rod is formed centrally witha depending iinger 54, which lies within the slot 35A of the member 35and is designed to engage the roller 47 as the lever 14 is rocked uponits pivot, the said lever being rocked through its connection with thecrosshead 9 or' the piston-rod by means or' the connectingearms 13,which are pivoted to the said cross-head and to the lever. Water underpressure enters the valve-chamber 2 through a pipe 55, which enters thesaid chamber at a point between the two heads of the valve 19 andescapes alternately at each end of the chamber through an exhaust-pipe56, which connects with the said chamber at each end beyond the limit ofmovement of the heads of the'valve, as will now be fully explained.

The operation of my improved Water-motor is as follows: Assuming thatthe parts are in the relative position shown in lFig. 3, water underpressure fills the valve-chamber 2 and enters the piston-chamber l rearof the piston 4 through the port 16. The piston then moves forward,carrying with it the cross-head 9, which is secured to the outer end ofthe piston-rod. The cross-head 9 moves the connecting-arms 13, which inturn rock the operating-lever 14 and cause the linger 54 at its lowerend to engage the roller 47 of the reciprocating bar 33. As the lever 14continues its movement the bar 33 is shifted to one side and theupturned end of its dog 39,which at the beginning of the movementengaged the notch 42 in the rod 23, escapes the said notch by theengagement of the depending end of the dog with the incline 44 of thearm 46, thus allowing the bar to pass. As the lever 14 reaches theposition shown in Fig. 4 the dog 38 will engage the notch 41 in theforward end of the rod 23 and the spring 28 meantime will have beencompressed by the upturned end of the bar, and a slightly farthermovement of the lever will cause its finger 54 to escape the roller 47,when the spring 28 will recoil, throwing the bar 33 forward and shiftingthe valve 19 to the position shown in dotted lines, Fig. 4, by theengagement of dog 38 with rod 23; but before the bar 33 reaches thelimit of its throw the depending end of dog 38 will engage the incline43 of arm 45 and release the head of the dog from the notch 41, thuspermitting the bar under the force of the recoil of the spring to gobeyond the limit of its normal position after the valve has reached thelimit of its throw without bringing any strain upon the dog. Thisexcessive movement of the bar will cause its opposite upturned end topartially compress the spring 29 on the opposite end of rod 23, and therecoil of this spring will bring the bar to its normal position and thedog 38 will engage notch 41. During this operation and while the pistonis moving forward the water in front of it will exhaust through port 15into the forward end of the valve-chamber between the valve-head and thecylinder-head and will escape through the pipe 56. Immediately upon theshifting of the valve the water under pressure passes up through port 15and enters the piston-chamber in front of the piston, which immediatelybegins to move rearward, and the exhaust-water rear of the piston passesdown through port 16 into the rear end of the valve-chamber and escapesthrough the pipe 56. As the piston moves rearward the operating-lever 14is again rocked and the former operation repeated. As water does notoperate expansively, it is necessary that the piston should receive thefull pressure of the water throughout its entire stroke, and this canonly be accomplished by releasing the valve instantaneously andsimultaneously with the arrival of the piston at the limit of its strokein each direction. This I accomplish by the mechanism herein illustratedand described.

By turning the member 35 of the reciprocating valve-actuating' bar thesaid bar may be lengthened or shortened as may be desired, so that thedogs 38 and 39 may be adjusted to the proper position with respect tothe notches 41 and 42 of the valve-rod.

Having thus fully described my invention,

what I claim as new, and desire to secure by Letters Patent, is-

1. In a water-motor, the combination of a valve-chamber, apiston-chamber and ports connecting said chambers near their ends; ak

piston in said piston-chamber secured upon one end of a rod, across-head upon the outer end of said rod, an operating-lever pivoted tosaid motor and arms connecting thelever with the cross-head; a rod whichpasses through the valve-chamber, a double-headed valve secured uponsaid rod; a reciprocating bar actuated by the operating-lever havingdogs which engage the valve-rod to shut said valve at a predeterminedpoint in the travel of the piston; awater-inlet in the valve-chamberbetween the heads of the valve and an outlet at each end of the chamberbeyond the valveheads` substantially as shown.

2. In a water-motor, the combination of a valve-chamber, apiston-chamber and ports which connect said chambers near their ends; apiston in said piston-chamber, a rod to which said piston is secured,the outer end of which carries a cross-head; an operating-lever having aforked end which straddles the motor and is pivoted thereto, and armswhich connect said lever with the cross-head; a rod which passes throughthe valve-chamber having a notch upon its under side near each end and adou ble-headed valve secured upon said rod; means for instantaneouslyshifting the valve at a predetermined point in the travel of the piston,consisting of an adjustable reciprocating bar, having dogs which engagethe notches of the valve-rod at a predetermined time, said bar beingspring-controlled in both directions and being actuated by theoperating-lever; a water-inlet to the valve-chamber between the heads ofthe valve, and an outlet at each end of said chamber, beyond the headsof the valve, substantially as shown.

3. ln a water-motor, the combination with a valve-chamber, apiston-chamber and ports connecting them, an operating-lever, a piston,means for connecting the piston and operating-lever and awater-controlling valve, of means for instantaneously shifting the saidvalve at a predetermined point in the travel of the piston, consistingof a rod which extends through the valve-chamber upon which the valve issecured, said rod having a notch near each end upon the under sidethereof; an adjustable springcontrolled reciprocating bar having slottedupturned ends, through which the ends of the valve-rod extend andspring-actuated dogs in the slots of said upturned ends; said bar beingmoved a predetermined distance in each direction bythe operating-lever,so that the said dogs shall alternately engage the notches of thevalve-rod, the bar being thrown by the recoil of its spring when itescapes the operating-lever, thereby throwing the valve, substantiallyas shown.

4. In a water-motor, a piston-chamber, a

TOO

IIO

' valve-chamber below said piston-chamber, and

ports connecting the said chambers; a rod extending through theValve-chamber and a double-headed valve secured upon the rod; a head ineach end of said chamber, an inwardlyextending housing upon each head,through which the ends of the said rod extend, and a coil-spring in eachof said housings around the extended ends of the rod; a reciprocatingpiston in the said piston-chamber, an operating rocking lever, connectedwith the piston; and a bar having upturned slotted ends, through whichthe ends of the said valve-rod pass, which upturned ends bear upon theouter ends of the said coil-spring, and dogs which engage the ends ofthe rod; the said bar being alternately shifted back and forth, by theaction of the operating-lever, against the pressure of the saidcoil-springs, and being adapted to escape the lever, and to be thrown byone or the other of the springs at a predetermined point in the movementof the piston thereby to shift the valve; and means for admitting waterto the valve-chamber between the valve-heads and for permitting itsescape at each end of the chamber, beyond the said valve-heads,substantially as shown.

5. In a water-motor, the combination with a valve-chamber, having adouble-headed valve, and a valve-rod which extends beyond the end ofsaid chamber, a piston-chamber having a reciprocating piston and rod,and ports connecting said chambers; of a cross-head secured upon theouter end of the piston-rod, an operating rocking lever having anengaging finger at its lower end, arms connecting the cross-head withthe operating-lever, and a bar having dogs which engage the extendedends of the valve-rod, the said bar having a roller which is engaged bythe finger upon the lower end of the operating-lever, to shift said barback and forth, said finger being adapted to escape the roller as thelever reaches the limit of its movement in each direction; and springswhich are alternately compressed by the back-and-forth movement of thebar, and which throw the said bar by the force of their recoil, when thebar is released by the lever, thereby shifting the position of thevalve, at a predetermined point in the movement of the piston,substantially as shown.

6. In a water-motor, the combination with a piston-chamber having areciprocating piston, a valve-chamber having a double-headed valvesecured upon a rod which extends beyond each end of said chamber, whichrod has a notch upon its under side near each of its ends, and portsconnecting the two chambers of alongitudinally-adjustablevalve-operatingbar, having upturned, slottedends through which the ends of the valve-rod pass, dogs within saidslots which alternately engage the adjacent notches in the ends of thevalve-rod, a roller upon said bar, a rocking lever operated bythe saidpiston, having a finger at its lower end which engages the said rollerso as to shift the bar back, and forth, and to escape the roller at thelimit of the levers movement in each direction; springs which arealternately compressed by the back-and-forth movement of the bar, andwhich throw the said bar by the force of their recoil, as its roller isreleased by the finger of the rocking lever, thereby shifting the valveat a predetermined point in the travel of the piston, and projectionswhich engage depending ends of said dogs, as the bar approaches thelimit of its throw in each direction, and releases them from the notchesof the valve-rod, substantially as shown.

7. In a water-motor, the combination with a piston-chamber having areciprocating piston and rod, a valve-chamber having a double-headedvalve secured upon a rod which extends beyond each end of said chamber,ports connecting said chambers at each end, and a spring-controlled barhaving dogs which engage the said valve-rod, and a roller which islocated centrally of the length of the said bar; of a forlredrockinglever, the members of which straddle the said chambers and arevconnected at their extremities by an arm having a depending lingerwhich is designed to engage the roller lof the spring-controlled bar tomove the said bar back and forth against the pressure of itssprings, andto escape the said roller at the limit of movement of the rocking leverin each direction, the sa'id bar being thrown in each direction,alternately by the recoil of the springs as the finger escapes theroller, Vthereby instantaneously shifting the position ofl the valve ata predetermined point in the movement of the piston in each direction,substantially as shown.

8. The combination with a water-motor comprising a piston-chamber havinga reciprocating piston, a valve-chamber having a Valve which is securedupon a rod which extends beyond each end of said chamber, and portswhich connect the chambers near their ends, of means for shifting theposition of said valve at a predetermined point in the movement of thevpiston, consisting of a longitudinally-adjustable spring-controlled bar,comprising a central member having a threaded hole in each end, in whichholes are screw members having upturned slotted ends, through which theends of the valve-rod pass, and dogs in said slotted ends which engagethe ends 2of the valve-rod, a roller carried by the central member ofthe bar, and a lever connected with the piston, for engaging the saidroller, and moving the bar back and forth against the action of itssprings, the said lever permitting the roller to escape it at apremeditated time, thereby causing the bar to be thrown by the recoil.of its springs, substantially as shown.

9. In a water-motor, a water-controlling valve the combination withhaving a notched rod, of a longitudinally adjustable springstantaneouslyshift the Valve at a premeditated controlled bar, having slotted,upturned ends time, substantially as shown. I0 through which the ends ofthe valve-rod pass In testimony whereof I aiX my signature in and dogsin said slots, which engage the notches presence of two Witnesses.

in the Valve-rod, and means for shifting the JOSEPH P. SHEVLIN. bar ineach direction against the pressure of Witnesses: its springs and forpermitting the said bar to G. SARGENT ELLIOTT,

be thrown by the recoil of said springs to in- MORRIS SELIGsoI-IN.

